Just start the discovery, it will put your controller in inclusion mode.
And for habmin installation see the wiki:
And for including your controller to openhab/habmin, see
Continuing the discussion from Testing Z-Wave binding on openHAB-2:
Firstly, you need to manually add the controller - in HABmin or PaperUI,
you need to go to the add thing option (in HABmin, this is the
Configuration | Thing Configuration menu, and click on the + at the
top). Select the “Z-Wave Serial Controller” thing. You need to go to the
port settings and set the COM port address.